Unlike most astrophysicists today, this one did go observing for a change. And what he finds there is out of this world. Literally.
The XXL Survey is here as the rightful successor to the XMM-Newton survey that gave us a unique and extravagant look into the high-energy universe. Here, we look at some of the observations that the XXL has to offer!
The “cooling flow” problem has taxed the minds of astrophysicists for decades. Now, modern simulations are able to shed light on the problem.
How do galaxy clusters form and evolve? Counting galaxies of different luminosities, masses, and colors can yield surprising insights.
More than 50 years ago, a Norwegian astronomer named Sjur Refsdal outlined an interesting new method for calculating the Hubble constant. Last November, astronomers found the perfect test case.
Measuring CMB distortions caused by gravitational lensing is a unique way of estimating galaxy cluster masses.